<!doctype html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <title><block name="pageTitle">默认标题</block></title>
</head>
<body>
<div>这是导航栏</div>
<block name="body">父视图body</block>
<div>这是页脚</div>
</body>
</html>